Nitrogen is one of the primary nutrients critical for the survival of all living organisms. Although nitrogen is very abundant in the atmosphere, it is largely inaccessible in this form to most ...

氮素是农业生产的重要元素，不但存在于动植物生产体系，还与我们的食物消费、资源利用、生态环境等密切相关。氮素伴随 ...

引力波探测器使用数公里长的干涉仪来测量时空的微小膨胀和收缩。由于量子力学的原因，这些测量的精度是有限的。理论上，利用光的压缩态可以超越量子极限，而合适的滤光腔可以在更宽的频率范围内扩展这一优势。

Manures and other organic residuals (e.g., biosolids, food processing wastes) and many commercial fertilizers available to producers contain nitrogen (N). Nitrogen is an important plant nutrient that ...

Because of the tight supplies and soaring costs of nitrogen materials, Indiana farmers are taking a critical second look at their fertilizer programs. The object of such an evaluation is to insure the ...

While agriculture producers apply nitrogen fertilizer to supply nutrients to their crops, they can't always keep those nutrients in the soil for maximum efficiency, often losing them into the ...

我国计划在2060年前实现碳中和目标，并提出“减污降碳”政策以达到改善空气质量和缓解气候变化的双赢。其间，将大幅减少人类化石燃烧排放的氮氧化物和养殖业与种植业排放的氨等活性氮物质。这将减少大气氮沉降，进而对陆地生态系统碳汇产生调控作用，并影响碳中和目 ...

在此，我们表明使用新提出的紧急约束（EC）来约束模型预测，可以在全球范围内将核心干旱指标——最长年度干旱期（LAD）——预测的不确定性降低10%—26%。经EC校正后的预测结果显示，与目前预测的未来作用力情景相比，LAD的平均增幅将高出42%—44% ...

Nitrogen is a critical limiting element for plant growth and production. It is a major component of chlorophyll, the most important pigment needed for photosynthesis, as well as amino acids, the ...

据新的研究披露，水循环的加强可能会引起美国氮素径流量的急剧增加——增幅近20%。在河流和港湾中混杂的过多氮素会对水系造成深重影响；例如 ...

总而言之，这项发表于 Cell ...

"Further investigation of this curious effect uncovered a new air lasing mechanism that facilitates radiative energy transfer from nitrogen to Ar." The new mechanism uncovered by Joshi and his ...